Harold Hall

Secure the vice on the vertical slide (using the clamps detailed later) with the
jaw plates removed and the jaws apart. Secure the moving jaw with a bar clamp using
the adjacent tee slot. Then, using an end mill, separately machine each jaw face.
It will not be possible to machine this width at one pass so the end mill will have
to be stepped down say in 1/4" increments. Remove the minimum necessary. Also, the
vice must be perfectly upright, check the side of the vice with a square off the
lathe's bed, if not done, the jaws will not be at ninety degrees to the sides of
the vice.

Next, to ensure the tops of the jaws and jaw plates are parallel to the vice base,
and therefore the machine table, machine the top faces as in Photograph 7. As can
be seen in the Photograph the method of securing the vice to the machine table in
this, and the previous operation, is by means of small clamps working into grooves
on either side of the vice, see Sk. 1 This arrangement gives considerable flexibility
in positioning the vice on the slide and is the main reason for adopting this type
of vice for use on the vertical slide, see final comments.

Dismantle, clean parts, remove sharp edges and assemble with a little lubrication.
Finally generously chamfer where appropriate and you have a very useful vice, well
worth the small sum of money paid and around four hours work.

If you have a more fully equipped workshop then modifying one of the larger ones
would be worth considering, even the 4" vice, also opening to 4", are still very
economically priced.

For me, a lick of paint in the Hall corporate colour, Humbrol Emerald green, and
I was well please with the result.